121025001457 has 8 divisors (see below), whose sum is σ = 123607395072. Its totient is φ = 118442916000.

The previous prime is 121025001451. The next prime is 121025001479. The reversal of 121025001457 is 754100520121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 121025001457 - 2¹⁹ = 121024477169 is a prime.

It is not an unprimeable number, because it can be changed into a prime (121025001451) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 829332 + ... + 964282.

It is an arithmetic number, because the mean of its divisors is an integer number (15450924384).

Almost surely, 2^121025001457 is an apocalyptic number.

It is an amenable number.

121025001457 is a deficient number, since it is larger than the sum of its proper divisors (2582393615).

121025001457 is a wasteful number, since it uses less digits than its factorization.

121025001457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 154079.

The product of its (nonzero) digits is 2800, while the sum is 28.

Adding to 121025001457 its reverse (754100520121), we get a palindrome (875125521578).

The spelling of 121025001457 in words is "one hundred twenty-one billion, twenty-five million, one thousand, four hundred fifty-seven".